28916877492 has 36 divisors (see below), whose sum is σ = 74293731876. Its totient is φ = 9480942720.

The previous prime is 28916877487. The next prime is 28916877497. The reversal of 28916877492 is 29477861982.

28916877492 is a `hidden beast` number, since 2 + 89 + 1 + 68 + 7 + 7 + 492 = 666.

It is an interprime number because it is at equal distance from previous prime (28916877487) and next prime (28916877497).

It can be written as a sum of positive squares in 2 ways, for example, as 1664150436 + 27252727056 = 40794^2 + 165084^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28916877497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6581793 + ... + 6586184.

Almost surely, 2^28916877492 is an apocalyptic number.

It is an amenable number.

28916877492 is an abundant number, since it is smaller than the sum of its proper divisors (45376854384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28916877492 is a wasteful number, since it uses less digits than its factorization.

28916877492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13168048 (or 13168043 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 63.

The spelling of 28916877492 in words is "twenty-eight billion, nine hundred sixteen million, eight hundred seventy-seven thousand, four hundred ninety-two".